Table of Contents
Advertisement
Extended functions
12.3 Adjustment
The operating current, motor operation at start/stop, and response in reaction to the command can be adjusted.
The items that can be adjusted vary between the normal mode and the current control mode.
Item
Operating current
Standstill current
Speed filter
Smooth drive
Speed error gain
Position loop gain
Speed loop gain
Speed integral time
constant
Anti-vibration control
„ Control mode
The driver operates in one of two control modes: the normal mode, and the current control mode. The desired mode
can be set using the control mode select switch (SW1-No.2). If noise is heard during high-speed operation or there is
notable vibration, it may be effective to switch to the current control mode.
Note, however, that a slight delay may occur in the current control mode, compared
to the normal mode, depending on the condition of the load.
Keep the driver in the normal mode during normal conditions of use.
OFF: Normal mode (NORM)
ON: Current control mode (CCM)
Note
• The new setting of the control mode select switch will become effective after the power is cycled.
• In the normal mode, the CCM input becomes effective.
„ Operating current
Set a desired operating current using the current setting switch
(CURRENT). The operating current to be set is the maximum output
current multiplied by the operating current rate (%) set to each dial
setting of the current setting switch, where "F" corresponds to 100%.
One of 16 operating current levels from 0 to F can be set. If the
load is small and there is an ample allowance for torque, the motor
temperature rise can be suppressed by setting a lower operating
current.
The value assigned to each dial setting of the current setting switch can be changed by using a corresponding
application parameter for operating current at CURRENT (one of [APP-0-00] to [APP-0-15]).
Note
Excessively low operating current may cause a problem in starting the motor or holding the load in
position. Do not lower the operating current more than necessary.
„ Standstill current
When the motor stops, the current cutback function will be actuated to lower the motor current to the standstill
current.
The standstill current is a value that the operating current which was set with the current setting switch is multiplied
by a ratio of the standstill current.
Set a desired standstill current using the application parameter for standstill current [APP-3-00].
The initial value is 50%.
−50−
Description
Adjust the current during operation.
Adjust the current at standstill.
Apply a filter to input pulses to make the
pulses smooth.
Insert interpolation pulses between input
pulses.
Suppress vibration while the motor is
accelerating/decelerating operating.
Vibration that generates while the motor is
accelerating/decelerating or at standstill can
be adjusted to an optimal level.
Enclosure vibration that occurs with an
equipment of low rigidity can be adjusted to
an optimal level.
Normal mode
Current control mode
Can be adjusted
Can not be adjusted
Can be adjusted
Can be adjusted
Can not be adjusted
Can not be
Can be adjusted
adjusted
NORM
CCM
Advertisement
Table of Contents
